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Data communication system and method

a data communication and data technology, applied in the direction of synchronisation signal speed/phase control, instruments, electric digital data processing, etc., can solve the problems of electrical discharge pulses consuming a significant amount of power and need to be sufficiently long

Inactive Publication Date: 2009-12-17
FREESCALE SEMICON INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Benefits of technology

[0005]In accordance with a second aspect of the pr

Problems solved by technology

However, the duration of the electrical discharge pulse has to be sufficiently long to take into account possible mismatches in timing between the central control units and the decentralized data processing units.
Since the power consumption of the system is determined, inter alia, by the duration of this pulse, a disadvantage of the data communication system described in this Patent Application Publication is therefore that the electrical discharge pulse consumes a significant amount of power.

Method used

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  • Data communication system and method

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Embodiment Construction

[0021]In FIG. 1, an example of a data communication system 1 is shown. The data communication system 1 includes a central control unit 10 and one or more, in this example two, data processing units. The data communication system 1 further includes one or more data connections 30,31. The data connections 30,31 connect the data processing units 20 to the central control unit 10.

[0022]As shown in FIG. 3 in more detail, the central control unit 10 may include a synchronisation unit 11. The synchronisation unit 11 may output via the data connection 30,31 an electric synchronisation signal to one or more of the data processing units 20. By means of the synchronisation signal, the time base of the data processing units 20 is synchronised. As shown in FIG. 5 in more detail, the data processing unit 20 includes a data generator 22. The data generator 22 can generate data and transmit, after the synchronisation signal, the data to the central control unit 10, for example in order to transmit ...

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Abstract

A data communication system includes one or more data processing units and includes a central control unit. The decentralized data processing units are connected to the central control unit by data connection. The central control unit includes a synchronisation unit for outputting via the data connection an electric synchronisation signal to the data processing unit. The data processing unit includes a data generator for generating data and transmitting, after the electric synchronisation signal, data to the central control unit. The central control unit further includes a discharge signal generator for outputting a discharge signal via the data connection to the data processing unit.

Description

FIELD OF THE INVENTION[0001]This invention relates to a data communication system. The invention further relates to a central control unit. The invention also relates to a data processing unit, and to a vehicle. The invention further relates to a method for communicating data. The invention further relates to a computer program product.BACKGROUND OF THE INVENTION[0002]From U.S. Patent Application Publication US 2006 / 0080495, a data communication system is known. The data communication system has a central control unit, decentralized data processing units and a data connection between the central control unit and the decentralized data processing units. During the transmission, in order to request data packets, the central control unit periodically outputs synchronization pulses over the data connection to the data processing unit interface, whereupon the decentralized data processing unit transmits data packets to the central control unit. The decentralized data processing unit gene...

Claims

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Application Information

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IPC IPC(8): G06F13/42
CPCH04L7/06
Inventor LANCE, PHILIPPEMARTY-BLAVIER, ARLETTEROLLAND, ERIC
Owner FREESCALE SEMICON INC